Question 4097 of 731 · Texas Journeyman Electrician Exam
In a 120/240-volt, 3-wire multiwire branch circuit, why must the two ungrounded conductors be connected to opposite lines?
Exactly one answer is correct.
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Correct answer to question 4097
- C: So the neutral carries only the unbalanced current
Explanation
On opposite lines, the neutral carries only the difference between the two line currents. If both ungrounded conductors were on the same line, the neutral would carry the sum of both currents and could be overloaded.
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